I was reading some articles the other day, and the impression I have is that that's really not true for at least Trump.
The Trump route was more:
- Conservatives in the US felt that media had a liberal bias. Whether it did or didn't doesn't matter for this discussion --- that was the perception.
- Fox News offers a viewpoint appealing to conservatives. It becomes essentially the only mainstream conservative media outlet. Liberal viewers watch a variety of news media, but Fox News dominates among conservatives.
- Fox News --- already somewhat opinion-based from the start --- starts to veer off into conspiracy land. Because so many conservatives watch Fox News, this has a major impact.
There's some back and forth here. It's not that Fox just pushed ideas that were out there, but that they're willing to show material based on what people will watch, and they gained more viewers than they lost if they ran bonkers stuff.
https://www.cnn.com/2021/06/08/media/fox-news-hoax-paperback-book/index.html
There wasn't really any major center-right mainstream news source other than Fox News, so if Fox shifts into conspiracy-land, so does the conservative public.
I dunno. Maybe the answer is something like a news source somewhere between CNN and Fox News. Something that a conservative audience is comfortable watching, but doesn't fly off the handle to the degree that Fox has. It maybe can't capture an audience that's as large, but it only needs enough to be viable.
I mean, there are center-right media sources like the Wall Street Journal, but those are kinda not aimed at mass audiences.